Data are quality
controlled the first week of each month. There likely are errors (especially
for snow data) for the most recent month's data. Please check that you
have the final version of the data before using.

Cumulative
daily precipitation data for water years 1934 - present. Water years
run Oct 1 - Sep 30 (e.g. WY 1934 = Oct 1, 1933 - Sep 30, 1934). This
insures that snowfall from the same winter is recorded in the same year.
Days are represented as WY julian days (1=Oct 1, 366=Sep 30). View a
WY julian calendar.